Sizing of roof beams carport

[fonzeka]

I was planning to extend an existing double garage with a carport and need some help to see if I'm thinking correctly. The span is 7.76m, and I don't want a pillar in the middle. Here's a small drawing, the garage is attached to the house, and the brown is the brick facade. There is an IPE steel beam running straight through the garage, the idea was to let the first roof beam rest on it and then on the brick walls. I'm not quite sure how to calculate what it needs to be dimensioned for?

The other two roof beams, I figured out that it would need 90x360 GL30c for. This is with an extra pillar 1.1m from the house wall so the span is only 6.66m.

Entering the full span of 7.76m, I get that it requires 90x450 GL30c, which is starting to get quite large.

Have I used the dimensioning program correctly, or does it look off? A street view might help too to get a better perspective.

 

[Cruzze]

But what if you lay the beams at 90 degrees so the span becomes 4.08 instead?

 

[fonzeka]

Not really sure if it helps that much?
It just makes the bärlinan thick instead.

 

[Jonssson13]

The dimensions seem to match quite well with those spans.
Insert 2 more ceiling beams (Ct = 1020)
This will slightly reduce the dimension but you should also decrease deflection to meet the requirements.
The beam will increase slightly in size, which is good since it should not be at 98% as you have not accounted for the snow pocket that will form against the brick facade.

 

[fonzeka]

The dimensions seem to match pretty well with those spans.
Insert 2 more roof beams (Ct = 1020)
This will slightly reduce the dimension but you should also decrease deflection to meet the requirements.
The beam will increase somewhat in size which is good since it shouldn't be at 98% because you haven't accounted for the snow pocket that will form against the brick facade.

Thanks for the response.
Yes, Ct 1020 is likely needed.
I was also thinking about just installing a post at the corner of the house, no door that risks banging open there anyway.
However, this places slightly higher demands on the beam there as it doesn't get any support in the middle.


Dimensioning for the inner beam against the house facade. If the roof beams are also attached to the house facade, maybe 90x315 would be more than sufficient despite it complaining about 12mm deformation?


Dimensioning for the outer beam.


Is 24mm deflection reasonable for the roof beams?
It gets very tight space-wise with higher roof beams, I think, and wider ones don't do much good.

 

[fonzeka]

It was 4 pieces of 115x315mm, let's see if it holds up this winter

 

[RoTe]

Stylish!!

 

[kniv]

Nice! Do you have any close-up pictures of the fastenings, etc.? I'm guessing you did the work yourself as well?

 

[fonzeka]

Thanks, had quite a bit of carpenter help. It takes way too long when you do it yourself and are a perfectionist. Got hold of cheap roof beams but they were a bit too short so had to extend the last part against the house facade.

Covered it with an underroof to avoid seeing it, thought it could become some kind of storage up there too.

Other side, the gutter is hidden inside the parapet.

This is what it looks like on the roof.

Installed two 6m LED strips from plejd with a motion detector that lights up from dimmed.